Horn for loud-speakers



April 14, 1 31. -A. J. MEGAN! 1,80 0 HORN FOR LOUD shamans Filed Aug. 1,1925 Patented Apr. 14, 1931 UNITED STATES PATENT; OFFICE AUGUST J.WIEGAND, O1 CHICAGO, ILLINOIS, ASSIGNOB 'IO GBIGSBY-GBUNOW COI- IPANY,OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS noun iron noun-sraaignasM invention relates to horns for loud speakers and has to do moreparticularly with horns of the above character adapted to be attached toa receiver or for a receiver 6 attached to the horn for use as a radioloud speaking receiver, although my invention is not intended to belimited to devices of this particular character.

There are various features and advantages 10 in my improved horn, andthese will be more particularly pointed out in the ensuing part of thespecification and appended claims.

For a better understanding of my invention reference is to be had to theaccompanyingflrawing, in which ig. 1 is a side elevation of thepreferred form of my invention mounted upon a base and standard fortable use;

Fig. 2 is a vertical sectional view along the line 22 of Fig. 1,"lookingin the, direction of the arrows indicated thereon;

Fig. 3 is a bottom view of Fig. 1; and Fig. 4 is a sectional viewthrough the central webbed portion of the horn, showing it mounted upona block which may extend from the wall or base of a cabinet.

Referring now more in detail to m invention, I provide a horn consistingo a neck portion A continuing into a bell portion B and shaped in theform of a goose-neck, U sha e, or single reverse curve. The hornis preerably made up of a suitable moldable Y material and I preferabl use asheeting made up of a pyroxylinplastlc compound such as pyralin whichmay be molded into the desired shape. a

The horn is preferably built up of two like but positely formed halves56 molded into the goose-neck. or reverse curve shape and attached orfastened together at abutting faces alon a median line throughout thehorn." In t 0 preferred form of my invention as shown herein theseabutting faces are made up of radially extending flanges as 7--8, whichare fastened together by a suitable cement. This flange construction ispreferable where a thin sheet-like material of the above character isused, although when using other plastic compounds such as fiber pulp,etc. the material may be heavy enough so as to have the two contiguousedges of the halves cemented or secured together in some other suitablewa Now as to the radial flanges or securing the two halves together, theouter flanges 7-8 .are preferably formed outwardly or away from thecenter of the horn so as not to obstruct the inner passage. Inconstructing the reverse curve or gooseneck type of horn as hereinillustrated, 1 preferably extend the inner abutting flanges so as toform a web made up of the two flanged portions 9-10. This webbedconstruction thus stiifens the horn and strengthens it and alsominimizes the vibration of the wall and thus reduces the harmfulresonant effects. Also it provides a greater and more positive fasteninsurface. Furthermore, this webbed wall is arranged as a supportingelement of the horn, that is the horn is supported from this web eitherfrom a table standard as G shown in Figs. 1, 2 and 3, or it may beattached to a wall or base block E within a cabinet or otherwise asshown in Fig. 4. This takes the strain off the tube.

In the base or table standard C I provide a suitable base member 11 forsupporting the attaching or carrying arms, WhlCh as shown hereincomprise two sheet-metal like halves 12-13 bowed out so as to clear theneck A of the horn and then come together at their upper ends to form aclamp in which the web of the horn is held. The lower ends of themembers 1213 extend down into the base and then are clamped against alug 14 by a clamping screw 15.

The members 12 and 13 are clamped to the webs 9 and 10 at the topthereof by nuts and bolt 15, a pivot thus being formed by means of whichthe horn is secured to the upright stud. Thus the horn may be readilyadjusted to any angle, pointing it downwardly, horizontally or upwardly,which is often desirable.

In forming up a horn of the character shown herein I preferably take asheet of pyralin of the proper developmentso as to be moldable into thedesired shape, and Leat it sufficiently so that it may be plastic enoughtobe formed between ressure moldin dies.

In heating the pyralin referably di 1t into water hot enough to soiizenthe pyra in to a moldable state, but not hot enough to burn or damagethe finish on the face of the sheet. The. sheet is then placed betweenthe proper molds and pressed into shape, after which it is chilled sothat it will retain its form. The two like but oppositely formed halvesare then suitably fastened together along the median line of the horn,preferably by a suitable cement. I v

I have shown a receiver or telephonic unit F attached to the neck of thehorn, such unit being of any desired and suitable type preferablyattached to the neck. W

What I claim as new and desire to secure by United States Letters,Patent is- 1. A horn for loud' speakersi and the like having a neck andcontinuingibell' portion comprising two like but'oppositely' formedhalves of suitable moldable plastic sheet'material provided withabutting edges on the median plane for fastening'the two halves togetherto form a single unitary structure, the flanges between the neck andbell being extended to provide a web of double thickness. v

V 2. A horn j for loud speakers and the like consisting of a tubularsound carrying member formed in a. U shape, and a horn supporting webextending across between and connecting the legs of the tubular memberas an integral portion thereof.

3. Ahorn for loud speakers and vthe like consisting of a tubular memberhaving .a neck and continuing bell portion formed in a U shape, anda'horn supporting web extending across between and connecting the neckand bell portions.

4. A horn-for loud speakers and the'like gether to form a single unitarystructure, said flange extending across between and connecting the neckand bell portions as a web, and means for supporting the horn by saidweb.

In witness whereof, I hereunto subscribe my name this 13th da ofFebruary 1925.

AUG ST J. WIEGAND.

consisting of a tubular member having'a neck and continuing bellportionformed in a U shape, and a horn supporting web extending acrossbetween and connecting the neck and bell portions, said tubular membersincluding two complementary sections and the web being a continuation ofsuch sections.

5. A horn for loud speakers and the like consisting of a U tubularmember havin a neck and continuing bell portion comprising twosymmetrical but oppositely formedhalv'es of suitable sheet materialprovided with abutting flanges extending on the median' plane forfastening the two halves together to form a single unitary. structure,said flange extending across between and connecting the neck and bell.portions as;a web.

6. A horn. for loud speakers and the like consisting of a Utubularmeinber having a neckandcontinuing bell portion comprising two,symmetrical but oppositely formed halves of suitable sheet ,materialprovided with abutting flanges, extending on the median plane. fo rfastening the two halves to-

